1.Tracheal Tube made of medical PVC, is oral insertion type 2.tube, cuff, inflatable tube, check valve, directed balloon, joint 3.General anesthesia, respiratory therapy, cardiopulmonary resuscitation 4.No Cuff Tracheal Tube: 2.5 3.0 3.5 4.0 4.5(mm); Cuffed Tracheal Tube: 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0(mm).